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Author Question: My battery charger uses 12. watts. At 6.0 cents per kilowatt-hour, how much does it cost to charge ... (Read 228 times)

Marty

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on: Jul 27, 2018
My battery charger uses 12. watts. At 6.0 cents per kilowatt-hour, how much does it cost to charge batteries for 24. hours?
 
  A) 0.28 cents
  B) 1.4 cents
  C) 0.74 cents
  D) 1.7 cents
  E) 2.3 cents

Question 2

The second law of thermodynamics leads us to conclude that
 
  A) the total energy of the universe is constant.
  B) disorder in the universe is increasing with the passage of time.
  C) it is theoretically possible to convert heat into work with 100 efficiency.
  D) the average temperature of the universe is increasing with the passage of time.


blfontai

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Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


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